# File lib/phusion_passenger/utils.rb, line 109
        def close_all_io_objects_for_fds(file_descriptors_to_leave_open)
                ObjectSpace.each_object(IO) do |io|
                        begin
                                if !file_descriptors_to_leave_open.include?(io.fileno) && !io.closed?
                                        io.close
                                end
                        rescue
                        end
                end
        end